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Disclosery

BLAIR WILLIAM & CO/IL: MBB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on MBB, newest first. How the timeline and the estimate are built.

BLAIR WILLIAM & CO/IL held 12,371 MBB shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 12,371 shares
    Change vs previous 13F +6,778 shares

    <0.01% of the 13F portfolio, value $1,169,351.

    13F-HR 0001104659-26-093821 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 5,593 shares
    Change vs previous 13F -207 shares

    <0.01% of the 13F portfolio, value $531,055.

    13F-HR 0001104659-26-057897 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 5,800 shares
    Change vs previous 13F -39 shares

    <0.01% of the 13F portfolio, value $552,276.

    13F-HR 0001104659-26-015563 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 5,839 shares
    Change vs previous 13F +1,059 shares

    <0.01% of the 13F portfolio, value $555,581.

    13F-HR 0001104659-25-109927 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 4,780 shares
    Change vs previous 13F -2,010 shares

    <0.01% of the 13F portfolio, value $448,794.

    13F-HR 0001104659-25-070274 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 6,790 shares
    Change vs previous 13F -809 shares

    <0.01% of the 13F portfolio, value $636,766.

    13F-HR 0001104659-25-046545 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F 7,599 shares
    Change vs previous 13F -411 shares

    <0.01% of the 13F portfolio, value $696,676.

    13F-HR 0001104659-25-011872 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 8,010 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $767,438.

    13F-HR 0001104659-24-116499 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).